Dropped my CW and GS membership

I'm a newbie to this forum and GSC. Just got my first renewal notice today. It mentions a new swipe and save card where you can get 3 cents off each gallon of gas at participating Pilot and Flying J locations. I was not aware of this feature, although I had seen in the past where you could use a Pilot / Flying J CC and get a discount...Just have no need for a new CC. Has anyone used this feature? Do the "old" cards work as well?

BTW I have opted out of junk mail but I don't consider what GSC sends me to be junk since I am a member.